Chapter 3.2, Problem 75E

To determine

To explain: The suggestion made by $r^2$

Explanation of Solution

Given:

The coefficient of determination $\left(r^2\right)=0.95$

Regression line: $\widehat{y}=6.4+0.93x$

The coefficient of determination shows the variation that is explained by the predictor variable on the response variable.

Here, the value of the coefficient of determination shows that the 95% of the variation in height is explained by the least square line with the arm span

Thus, the correct option is (d).